<template>
	<el-container class="home-container">
	<!-- 头部区域 -->
	  <el-header>
		<div>
			<img src="../assets/yizhu_logo.png" width="100px" height="60px" alt="" />
			<span>后台管理系统</span>
		</div>
		<el-button type="info" @click="logout()">退出</el-button>
	  </el-header>
	  <!-- 页面主体区域 -->
	  <el-container>
		  <!-- 侧边栏 -->
	    <el-aside :width="isCollapse ? '64px' : '200px'">
			<div class="toggle-button" @click="toggleCollapse">|||</div>
			<!-- 侧边栏菜单区域 -->
			<el-menu background-color="#333744" text-color="#fff" 
			active-text-color="#409EFF" unique-opened :collapse="isCollapse"
			:collapse-transition="false" router :default-active="$route.path">
			    <!-- 一级菜单 -->
				<el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
				  <!-- 一级菜单的模板区域 -->
			      <template slot="title">
					<!-- 图标 -->
			        <i :class="iconsObj[item.id]"></i>
					<!-- 文本 -->
			        <span>{{item.authName}}</span>
			      </template>
			        
					<!-- 二级菜单 -->
			        <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id">
			          <template slot="title">
						  <!-- 图标 -->
						  <i class="el-icon-menu"></i>
						  <!-- 文本 -->
						  <span>{{subItem.authName}}</span>
					  </template>
			        </el-menu-item>
			      </el-submenu>
			    </el-menu>
		</el-aside>
		<!-- 右侧内容主体 -->
	    <el-main>
			<!-- 路由占位符 -->
			<router-view></router-view>
		</el-main>
	  </el-container>
	</el-container>

</template>

<script>
	export default {
		data() {
			return {
				//左侧菜单数据
				menulist: [],
				//菜单图标
				iconsObj: {
					'125': 'iconfont icon-user',
					'103': 'iconfont icon-tijikongjian',
					'101': 'iconfont icon-shangpin',
					'102': 'iconfont icon-danju',
					'145': 'iconfont icon-baobiao'
				},
				//是否折叠菜单
				isCollapse: false
			}
		},
		created() {
			this.getMenuList()
		},
		methods: {
			logout() {
				window.sessionStorage.clear();
				this.$router.push("/login");
			},
			//获取所有的菜单
			async getMenuList() {
				const { data: res } = await this.$http.get('menus')
				if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
				this.menulist = res.data
			},
			//点击按钮，切换菜单的折叠与展开
			toggleCollapse() {
				this.isCollapse = !this.isCollapse
			}
		}
	}
</script>

<style lang="less" scoped>
	.home-container {
		height: 100%;
	}
	.el-header {
		background-color: #373d41;
		display: flex;
		justify-content: space-between;
		padding-left: 0;
		align-items: center;
		color: #fff;
		font-size: 20px;
		> div {
			display: flex;
			align-items: center;
			span {
				margin-left: 15px;
			}
		}
	}
	.el-aside {
		background-color: #333744;
		.el-menu {
			border-right: none;
		}
	}
	.el-main {
		background-color: #eaedf1;
	}
	
	.iconfont {
		margin-right: 10px;
	}
	
	.toggle-button {
		background-color: #4A5064;
		font-size: 10px;
		line-height: 24px;
		color: #fff;
		text-align: center;
		letter-spacing: 0.2em;
		cursor: pointer;
	}
</style>
